Wrist-pin



C. H. CLENIONS.

WRIST PIN.

APPLICATION FILED IIIAYII, 1921.

Patnted Nov. 1, 1921.

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Y. it may seat a cy Tacllwwnttt may cncem: Be itskn'own that LCHARLES CHARLES HENRY emmene, on ILLrNoIs.

a 'citizen of the United States, residirg at Vleld'on,- in the countycjof .De Witt and. tate shaped.

rib 8 along the Slot 7 in a v isV usual of Illinois, "Improvements in VVVrist-Pins, of whlch the tons, and its object drawing, forming lngthe same.

have invented new and useful following is aspeciication.

This invention relates to wristpins vem-` ployed for attaching connecting rods to pisremoval from the pis,-

novel combination and arrangement of parts to behereinafter'described and clalmed, and

in order that thesame may be better under# stood2 reference is tion.

In'the drawing, l W

Figure 1 is an `elevation of the d evlce,

Fig. 2 is a cross-section on the l1ne 2 2 ofF1g.1;v

Fig. 3 is a central 'longltudlnal sectlon,

and I f 4 is a of F1 .3. l K Regerring specifically toc the drawing 5 denotes a wrist 'in'whlch'is' tubular-so that iindrical core 6. In'the side of the wrist pin is a slot 7 which opens into the bore thereof, so that the 1n is split longitudinally. In the slot 7 seats.a rib 8 formedon core and extendin vinxthe direction of the length thereof. Tg out the entire length of the pin 5- and 1t 1s tapered toward one end, the rib8 being correspondingly tapered so that it is wedgecross-section on theline 4` 4 `The pin 5 is resilient to a degree suicient vto enable it to be expanded when wear occurs so that it may again accurately it the bearing bosses of the piston or the bushings lin- This expansion of the pin is effected by drawing. the `core 6 in thedirection of the length of theepin to advance the direction to act as a wed e to spread the same. As thewear y comparatively slight, a slight movement of the vcore issucient rto take up the same. 1 The following -means are provided for e core 6 at the smaller end of Theend of t Specification ofLettersPatent.4 Pa Application led May 1 1,

fy fthe rib H. CLEMoNs',' j

. head'il whlch y1s kerfed screw driver. Theborel ofthe pin 5 is en-V larged at one end suiciently'as shown at12,

. .latterisa groove 13 rto 1s to produce a wrist pin u whichcan be readily adjusted to compensate for wear, without ton. j A

The object stated is attained by means of a,

had to-the accompanying a part of this specifica..

thelpm 5.A The .pin jin which c v hel'rib 8 projects for a .short distance of the rib interfering the side of the,

slot 7 extends through# ylongitudinally to permit tentes Nev; 1,1921..

v1921.. "serial No. 46am.

to seat an adjusting-screw 10 having a flat for application of a to seat the head 11,\and

l in the edge of' the seat a locking device n has a" tapped central 4aperture 9 ifor the screw. AThis deviceiis a split resilient" ring 14 having one end bent inwardly andv inserted into a recess 15 inthe bottom'of the groove 13. The other end of theA ring projects slightly from the groove 13 sogthat'it. t

may snap into theslo whenit comes opi. posite the latter, and thereby hold thescrew from turmng in a direction to back and allow the core 6v to move in j tract the rib 7 .,"However, the projecting end of thergng yields when the screw is'turned 1n a d 1rect1on to advance the Arib to spread against the shoulder 16 produced Aby the enhead 11 of. the screw abutsv asl a direction to -re larged end portion 12 of the'bore of' the said head seats.

from thatlend of respond to the thickness of the wall of the I pin 5 at the enlarged, portion 12 of its bore, so that the core may be advanced to its 11tmost limit without the projecting portion with the screw by abutting against its head 11. The'core 6 has alongitudinal side recess 18 nearjone end to allow its adjustment in' the pino 5 without drawing on the cap screw .that is' sometimes used to hold the pin in the piston, and which passes through a side 'aperture19 in the pin, said aperture registering w'ith the recess.

If/the wedge rib 8 does not expand the pin 5 sliiiciently to take up wear, a brass shim may-be placed on one side of the rib. I claim: 1. A wrist belng tapered in the direction of one of its ends, a core oslidablymounted in said body and having a wedge-shaped rib seating in the slot, and adjusting means for said core. wrist pin comprising a tubular body havlng va side slot extending throughout its entirenlength, whereby the bodyl 1s split longitudinally topermft expansion, said slot I expansion, said slot being tapered in the direction of one of its ends, a Core slidably mounted in said body and having a Wedge-shaped rib seating in the slot, and an adjusting screw for the core carried by the body, said sore-W being threaded into one end of the core.

3. A Wrist pin comprising a tubular body.

which is split longitudinally to permit expansion, a core -slidably mounted in said body and having a Wedge-shaped'rib seating 'in the split thereof, an adjusting screw threaded into one end of the lCore and oarried by the body, and means Jfor locking Said screw against rotation in one direction.

4;. A Wrist pin comprising a tubular body which is split longitudinally to permit expansion, a core slidably mounted in said body and havin a Wedge-shaped rib seating in the split t ereof, and an adjusting screw seating in the body and threaded into one end of the core, said body having an internal shoulder against Which the head of the screw abuts.

5. A Wrist pin comprising a tubular and expansible body which is Split longitudinally throughout its entire length, -a member sldably mounted in said body and having a wedge ooextensive with and seating in the split for expanding the body, and adjusting means for said member.

In testimony whereof I ax m si nature.

CHARLES HENRY CLMNS. 

